RELAP5-3D Development Intern

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    Idaho National Laboratory

    Changing the world’s energy future and securing our nation's critical infrastructure ⚛️

    5,001-10,000 employeesFounded 1949Idaho Falls, IDResearch Services
    Actively hiringPaidSummer 2027Research Services
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    Best applied by Oct 26

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    About the role#

    Join the Reactor Systems and Heat Transport team to work on fusion energy systems. You will help develop and implement computational methods to model tritium transport in complex thermal-hydraulic environments using the RELAP5-3D code. This role provides experience at the intersection of nuclear engineering, computational methods, and fusion technology.

    What you'll do#

    • Write production-level code in Fortran.
    • Develop prototypes using Python.
    • Support the theoretical research that underpins these modeling approaches.

    What you'll need#

    • Full-time enrollment in an undergraduate degree program in nuclear, mechanical, or chemical engineering, or physics.
    • A minimum overall 3.0 GPA.
    • Authorization to work in the U.S.
    • Experience with RELAP5-3D analysis, Fortran, and Python.
    • Ability to provide a current resume, unofficial transcripts, and your current class schedule.

    Location & details#

    • This position is based on-site in Idaho Falls, Idaho.
    • The team follows a 9x80 work schedule.
    • This is a paid internship for Summer 2027.
    • Compensation ranges from $26.94 to $32.41 per hour.
    • Benefits include paid holiday time off and potential travel reimbursement for eligible interns.
    • You may be eligible to receive course credit for this internship.

    About Idaho National Laboratory

    Idaho National Laboratory is a science-based, applied engineering national laboratory founded in 1949. It supports the United States Department of Energy through research in nuclear science, energy, and national defense. The laboratory operates from an 890-square-mile site and employs over 4,000 people. Its research spans robotics, wind power, biofuels, and critical infrastructure protection.

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